The dynamic Allan variance (DAVAR) is a tool for the characterization of precise clocks. Monitoring anomalies of precise clocks is essential, especially when they are employed onboard the satellites of a global navigation satellite system (GNSS). When an anomaly occurs, the DAVAR changes with time, its shape depending on the type of anomaly occurred. We obtain the analytic DAVAR for a change of variance in the clock noise, an anomaly with critical effects on the clock performances. This result is helpful when the clock health is monitored by observing the DAVAR.
Characterizing changes in the noise statistics of GNSS space clocks with the dynamic Allan variance / Galleani, Lorenzo. - ELETTRONICO. - (2014), pp. 426-430. (Intervento presentato al convegno 22nd European Signal Processing Conference, EUSIPCO 2014 tenutosi a Lisbon nel 2014).
Characterizing changes in the noise statistics of GNSS space clocks with the dynamic Allan variance
GALLEANI, Lorenzo
2014
Abstract
The dynamic Allan variance (DAVAR) is a tool for the characterization of precise clocks. Monitoring anomalies of precise clocks is essential, especially when they are employed onboard the satellites of a global navigation satellite system (GNSS). When an anomaly occurs, the DAVAR changes with time, its shape depending on the type of anomaly occurred. We obtain the analytic DAVAR for a change of variance in the clock noise, an anomaly with critical effects on the clock performances. This result is helpful when the clock health is monitored by observing the DAVAR.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2646347
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